(*
    Copyright 2021 Anton Krotov

    This file is part of CEdit.

    CEdit is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    CEdit is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with CEdit. If not, see <http://www.gnu.org/licenses/>.
*)

MODULE CEdit;

IMPORT
    OpenDlg, K := KolibriOS,
    U := Utils, Lines, Menu, List,
    G := Graph, T := Text, E := Encodings,
    CB := Clipboard, Languages,
    ChangeLog, Scroll, CheckBox,
    RW, Ini, EB := EditBox, Icons, Tabs, Timer;

CONST
    HEADER = "CEdit (27-nov-2021)";

    ShellFilter = "";
    EditFilter = "SH|INC|TXT|ASM|OB07|C|CPP|H|PAS|PP|LUA|INI|JSON";

    fontWidth = K.fontWidth;
    fontHeight = K.fontHeight;
    scrollWidth = 22;

    btnClose = 1;
    btnNew = 20;
    btnOpen = 21;
    btnSave = 22;
    btnSearch = 23;
    btnUndo = 24;
    btnRedo = 25;
    btnUpper = 26;
    btnLower = 27;
    btnBuild = 28;
    btnRun = 29;

    btnYes = 40;
    btnNo = 41;
    btnFindNext = 42;
    btnReplace = 43;
    btnReplaceAll = 44;
    btnGoto = 45;
    btnCloseSearch = 46;
    btnHideSearch = 47;

    mainMenuBtn = 60;

    btnHeight = 25;
    btnWidth = 75;
    btnTop = Menu.MainMenuHeight + 3;
    toolBtnSize = 24;
    toolbarDelim = 7;
    iconPad = (toolBtnSize - Icons.SIZE) DIV 2;

    TOP = btnTop + toolBtnSize + 10 + Tabs.tabHeight;
    RIGHT = scrollWidth - 2;
    BOTTOM = scrollWidth + 18;

    minWinWidth = 635; minWinHeight = 550;

    SEARCH_PADDING = 10;
    searchLeft = 0;
    EditBox_Width = 180;
    EDITBOX_MAXCHARS = 500;

    menuFileX = searchLeft;
    menuEditX = menuFileX + 4*fontWidth + 9;
    menuSearchX = menuEditX + 4*fontWidth + 9;
    menuEncodingX = menuSearchX + 6*fontWidth + 9;
    menuViewX = menuEncodingX + 8*fontWidth + 9;
    menuLanguageX = menuViewX + 4*fontWidth + 9;
    menuProgramX = menuLanguageX + 8*fontWidth + 9;
    menuToolsX = menuProgramX + 7*fontWidth + 9;

    menuCut = 1;
    menuCopy = 2;
    menuPaste = 3;
    menuDelete = 4;
    menuSelectAll = 5;

    menuUndo = 6;
    menuRedo = 7;

    menuCurLine = 100;
    menuIndent = 110;
    menuCase = 120;

    menuNew = 10;
    menuOpen = 11;
    menuSave = 12;
    menuSaveAs = 13;
    menuSaveAll = 14;
    menuFolder = 15;
    menuClose = 16;
    menuExit = 17;

    menuNumbers = 20;
    menuFontSize = 21;
    menuColors = 1000;
    menuMaxColors = menuColors + Ini.MAX_SECTIONS - 1;

    menuText = 30;
    menuC = 31;
    menuFasm = 32;
    menuIni = 33;
    menuJSON = 34;
    menuLua = 35;
    menuOberon = 36;
    menuPascal = 37;

    menuBuild = 50;
    menuBuildScript = 51;
    menuRun = 52;
    menuRunScript = 53;
    menuDebug = 54;
    menuDebugScript = 55;

    menuUTF8BOM = 60;
    menuUTF8 = 61;
    menuCP866 = 62;
    menuWin1251 = 63;
    menuEOL = 140;

    menuPipet = 70;
    menuBoard = 71;
    menuSysFunc = 72;

    menuFind = 80;
    menuFindNext = 81;
    menuFindPrev = 82;
    menuGoto = 83;
    menuBookmark = 130;

    menuMoveUp = 101;
    menuMoveDown = 102;
    menuDuplicate = 103;
    menuRemove = 104;

    menuIncInd = 111;
    menuDecInd = 112;

    menuUpper = 121;
    menuLower = 122;

    menuToggleBookmark = 131;
    menuNextBookmark = 132;
    menuPrevBookmark = 133;

    menuLF = 141;
    menuCRLF = 142;
    menuCR = 143;

    maxTexts = 32;


VAR
    canvas: G.tCanvas;
    font, font1, font2: G.tFont;

    tabs: Tabs.tTabs;
    text: T.tText;
    texts: ARRAY maxTexts OF T.tText;
    textsCount, curText: INTEGER;

    winWidth, winHeight: INTEGER;
    AppPath, runScript, buildScript, debugScript: RW.tFileName;
    OD: OpenDlg.Dialog;
    confirm, notFound, menuFindClicked, search, searchOpened, modified: BOOLEAN;
    eol, enc: INTEGER;

    switch, closing: BOOLEAN;
    leftButton: BOOLEAN;
    LEFT: INTEGER;

    FindEdit, ReplaceEdit, GotoEdit: EB.tEditBox;
    hScroll, vScroll: Scroll.tScroll;
    CS, WH, BKW: CheckBox.tCheckBox;

    new_searchText, searchText, replaceText, gotoText: T.tString;
    cs, whole: BOOLEAN;

    replaced: INTEGER;

    mainTID: INTEGER;

    context, menuFile, menuEdit, menuSearch, menuEncoding,
    menuView, menuLanguage, menuProgram, menuTools,
    subCurLine, subIndent, subCase, subBookmark, subEOL: Menu.tMenu;

    mainMenu: Menu.tMain;

    menuActive: BOOLEAN;

    icons: INTEGER;
    grayIcons: INTEGER;

    IPC: ARRAY 64 OF INTEGER;


PROCEDURE WritePos (y: INTEGER);
VAR
    s1, s2: ARRAY 32 OF WCHAR;
    line, col: INTEGER;
BEGIN
    T.getPos(text, col, line);
    U.int2str(line, s1);
    U.int2str(col, s2);
    U.append(s1, ": ");
    U.append(s1, s2);
    K.DrawText(LEFT, y, K.textColor, s1)
END WritePos;


PROCEDURE EditBox_Focus (edit: EB.tEditBox): BOOLEAN;
	RETURN 1 IN edit.flags
END EditBox_Focus;


PROCEDURE resetTimer;
BEGIN
	IF EditBox_Focus(FindEdit) OR EditBox_Focus(ReplaceEdit) OR EditBox_Focus(GotoEdit) THEN
		T.hideCursor;
		Timer.kill
	ELSE
		T.showCursor;
		Timer.create(mainTID)
	END
END resetTimer;


PROCEDURE EditBox_SetFocus (VAR edit: EB.tEditBox; value: BOOLEAN);
BEGIN
    IF value THEN
    	INCL(edit.flags, 1)
    ELSE
    	EXCL(edit.flags, 1)
    END;
    IF search & searchOpened THEN
        EB.paint(edit)
    END
END EditBox_SetFocus;


PROCEDURE SetFocus (VAR edit: EB.tEditBox; value: BOOLEAN);
BEGIN
    EditBox_SetFocus(FindEdit, FALSE);
    EditBox_SetFocus(ReplaceEdit, FALSE);
    EditBox_SetFocus(GotoEdit, FALSE);
    EditBox_SetFocus(edit, value);
  	resetTimer
END SetFocus;


PROCEDURE Rect (left, top, right, bottom, color: INTEGER);
BEGIN
    K.DrawLine(left, top, right, top, color);
    K.DrawLine(left, bottom, right, bottom, color);
    K.DrawLine(left, top, left, bottom, color);
    K.DrawLine(right, top, right, bottom, color);
END Rect;


PROCEDURE Message (s: ARRAY OF WCHAR);
CONST
    minWidth = 30;
    height = 40;
    borderColor = 808080H;
VAR
    top, left, right, bottom, x, y, width: INTEGER;
BEGIN
	Timer.kill;
    width := minWidth + LENGTH(s)*fontWidth;
    left := (canvas.width - width) DIV 2 + LEFT;
    top := (canvas.height - height) DIV 2 + TOP;
    bottom := top + height - 1;
    right := left + width - 1;
    x := minWidth DIV 2 + left;
    y := (height - fontHeight) DIV 2 + top;
    K.DrawRect(left, top, width, height, K.winColor);
    Rect(left, top, right, bottom, borderColor);
    K.DrawText(x, y, K.textColor, s);
END Message;


PROCEDURE NotFound;
BEGIN
    IF notFound THEN
        Message("not found");
        IF menuFindClicked THEN
        	menuFindClicked := FALSE
        ELSE
        	notFound := FALSE
        END;
        SetFocus(FindEdit, TRUE)
    END
END NotFound;


PROCEDURE Replaced;
VAR
    s, s1: ARRAY 32 OF WCHAR;
BEGIN
    IF replaced # 0 THEN
        s := "replaced: ";
        U.int2str(replaced, s1);
        U.append(s, s1);
        Message(s);
        replaced := 0;
        SetFocus(FindEdit, TRUE)
    END
END Replaced;


PROCEDURE drawIcon (icons, idx, x: INTEGER);
BEGIN
	Icons.draw(icons, idx, x + iconPad, btnTop + iconPad)
END drawIcon;


PROCEDURE toolbarIcons;
VAR
    x, color, ico: INTEGER;
BEGIN
    x := searchLeft + (toolBtnSize + 5)*2;
    IF text.modified THEN
    	ico := icons
    ELSE
    	ico := grayIcons
    END;
    drawIcon(ico, 5, x);

    IF text.edition # NIL THEN
        x := searchLeft + (toolBtnSize + 5)*4 + toolbarDelim*2;
        IF ChangeLog.isFirstGuard(text.edition) THEN
        	ico := grayIcons
        ELSE
        	ico := icons
        END;
        drawIcon(ico, 37, x);

        x := searchLeft + (toolBtnSize + 5)*5 + toolbarDelim*2;
        IF ChangeLog.isLastGuard(text.edition) THEN
        	ico := grayIcons
        ELSE
        	ico := icons
        END;
        drawIcon(ico, 36, x)
    END;

    IF T.selected(text) THEN
        color := K.caseColor
    ELSE
        color := K.disCaseColor
    END;

    x := searchLeft + (toolBtnSize + 5)*6 + toolbarDelim*3;
    K.DrawRect(x, btnTop, toolBtnSize, toolBtnSize, K.toolbarColor);
    K.DrawText69(x + (toolBtnSize - 12) DIV 2, btnTop + (toolBtnSize - 9) DIV 2 + 2, color, "AB");
    INC(x, toolBtnSize + 5);
    K.DrawRect(x, btnTop, toolBtnSize, toolBtnSize, K.toolbarColor);
    K.DrawText69(x + (toolBtnSize - 12) DIV 2, btnTop + (toolBtnSize - 9) DIV 2 + 2, color, "ab");

    x := searchLeft + (toolBtnSize + 5)*8 + toolbarDelim*4;
    IF buildScript # "" THEN
    	ico := icons
    ELSE
    	ico := grayIcons
    END;
	drawIcon(ico, 54, x);

    INC(x, toolBtnSize + 5);
    IF runScript # "" THEN
    	ico := icons
    ELSE
    	ico := grayIcons
    END;
    drawIcon(ico, 53, x)
END toolbarIcons;


PROCEDURE WriteModified (x, y: INTEGER);
BEGIN
    modified := text.modified;
    K.DrawRect(x, TOP + canvas.height + scrollWidth, 8*fontWidth, BOTTOM - scrollWidth + 1, K.winColor);
    IF modified THEN
        K.DrawText866(x, y, K.textColor, "modified")
    END
END WriteModified;


PROCEDURE DrawState (text: T.tText; width, height: INTEGER);
VAR
    y: INTEGER;
    s: ARRAY 24 OF WCHAR;
    header: RW.tFileName;
BEGIN
	eol := T.getEol(text);
	enc := T.getEnc(text);
    s := "";
    U.append(s, RW.eolNames[eol]);
    U.append(s, 20X + 20X);
    U.append(s, E.names[enc]);
    header := HEADER;
    IF text.fileName # "" THEN
    	U.append8(header, " - ");
    	U.append8(header, text.fileName)
    END;
    K.SetCaption(header);
    K.DrawRect(LEFT + 16*fontWidth, TOP + canvas.height + scrollWidth, width - (LEFT + 16*fontWidth), BOTTOM - scrollWidth + 1, K.winColor);
    y := height - (BOTTOM - scrollWidth) + (BOTTOM - scrollWidth - 16) DIV 2;
    K.DrawText(width - (LENGTH(s) + 10)*fontWidth, y, K.textColor, s);
    WriteModified(width - 8*fontWidth, y)
END DrawState;


PROCEDURE DrawScroll (VAR scroll: Scroll.tScroll; left, top, value, maxVal: INTEGER);
BEGIN
	scroll.maxVal := maxVal;
    scroll.left := left;
    scroll.top := top;
    Scroll.setValue(scroll, value);
    Scroll.paint(scroll)
END DrawScroll;


PROCEDURE repaint;
VAR
    width, height, scrollX, scrollY, y: INTEGER;
BEGIN
    IF text # NIL THEN
        IF confirm THEN
            K.DeleteButton(btnYes);
            K.DeleteButton(btnNo);
            confirm := FALSE;
            resetTimer;
            closing := FALSE
        END;
        IF ~search OR (searchText = "") THEN
            T.wordSel(text)
        END;
        K.ClientSize(width, height);
        IF switch THEN
            DrawState(text, width, height);
            Tabs.draw(tabs);
            IF search & T.search(text, searchText, cs, whole) THEN END;
            switch := FALSE
        END;
        T.draw(text);
        y := height - (BOTTOM - scrollWidth) + (BOTTOM - scrollWidth - 16) DIV 2;
        K.DrawRect(LEFT, TOP + canvas.height + scrollWidth, 16*fontWidth, BOTTOM - scrollWidth + 1, K.winColor);
        WritePos(y);

        IF (enc # T.getEnc(text)) OR (eol # T.getEol(text)) THEN
        	DrawState(text, width, height)
        ELSIF modified # text.modified THEN
            WriteModified(width - 8*fontWidth, y)
        END;

        T.getScroll(text, scrollX, scrollY);
        DrawScroll(vScroll, LEFT + canvas.width, TOP - 1, scrollY, text.count - 1);
        DrawScroll(hScroll, LEFT, TOP + canvas.height, scrollX, text.maxLength);
        IF search & searchOpened THEN
	        CheckBox.paint(BKW);
	        CheckBox.paint(CS);
	        CheckBox.paint(WH);
        END;

        G.DrawCanvas(canvas, LEFT, TOP);
        NotFound;
        Replaced;
        toolbarIcons
    END
END repaint;


PROCEDURE resize;
VAR
    cliWidth, cliHeight: INTEGER;
BEGIN
    K.WinSize(winWidth, winHeight);
    IF winWidth < minWinWidth THEN
        winWidth := minWinWidth
    END;
    IF winHeight < minWinHeight THEN
        winHeight := minWinHeight
    END;
    K.SetWinSize(winWidth, winHeight);
    K.WinSize(winWidth, winHeight);
    K.ClientSize(cliWidth, cliHeight);
    G.destroy(canvas);
    canvas := G.CreateCanvas(cliWidth - (LEFT + RIGHT + 2), cliHeight - (TOP + BOTTOM + 1));
    Tabs.setArea(tabs, LEFT, TOP - Tabs.tabHeight, cliWidth - (LEFT + RIGHT + 2), Tabs.tabHeight);
    G.SetFont(canvas, font);
    T.setCanvas(canvas);
    T.resize(canvas.width, canvas.height);
    Scroll.resize(vScroll, vScroll.width, canvas.height + 2);
    Scroll.resize(hScroll, canvas.width + 1, hScroll.height);
END resize;


PROCEDURE SearchPanel (left, top: INTEGER);
VAR
    y, right, bottom, color: INTEGER;
BEGIN
    DEC(top, Tabs.tabHeight);
    right := left + EditBox_Width + SEARCH_PADDING*2;
    bottom := top + 395 + btnHeight + SEARCH_PADDING;
    color := K.borderColor;
    Rect(left, top, right, bottom, color);
    K.CreateButton(btnCloseSearch, right - 20, top, 20, 20, 0EF999FH, "");
    K.DrawLine(right - 14, top + 5, right - 5, top + 14, 0FFFFFFH);
    K.DrawLine(right - 15, top + 5, right - 5, top + 15, 0FFFFFFH);
    K.DrawLine(right - 15, top + 6, right - 6, top + 15, 0FFFFFFH);
    K.DrawLine(right - 15, top + 14, right - 6, top + 5, 0FFFFFFH);
    K.DrawLine(right - 15, top + 15, right - 5, top + 5, 0FFFFFFH);
    K.DrawLine(right - 14, top + 15, right - 5, top + 6, 0FFFFFFH);

    K.CreateButton(btnHideSearch, right - 40, top, 20, 20, K.btnColor, "");
    K.DrawLine(right - 34, top + 14, right - 26, top + 14, K.btnTextColor);
    K.DrawLine(right - 34, top + 15, right - 26, top + 15, K.btnTextColor);

    INC(top, 15);
    INC(left, SEARCH_PADDING);
    K.DrawText866(left, top, K.textColor, "find");
    K.DrawText866(left, top + 55, K.textColor, "replace with");
    K.DrawText866(left, top + 330, K.textColor, "go to line");
    BKW.top := top + 110;
    BKW.left := left;
    CS.top := top + 140;
    CS.left := left;
    WH.top := top + 170;
    WH.left := left;
    FindEdit.top := top + 20;
    ReplaceEdit.top := top + 75;
    GotoEdit.top := top + 350;
    FindEdit.left := left;
    ReplaceEdit.left := left;
    GotoEdit.left := left;
    EB.paint(FindEdit);
    EB.paint(ReplaceEdit);
    EB.paint(GotoEdit);
    y := top + 200;
    K.CreateButton(btnFindNext, left, y, btnWidth, btnHeight, K.btnColor, "next"); INC(y, btnHeight + 10);
    K.CreateButton(btnReplace, left, y, btnWidth, btnHeight, K.btnColor, "replace"); INC(y, btnHeight + 10);
    K.CreateButton(btnReplaceAll, left, y, btnWidth + 5*fontWidth - 2, btnHeight, K.btnColor, "replace all");
    K.CreateButton(btnGoto, left, top + 380, btnWidth, btnHeight, K.btnColor, "go");
END SearchPanel;


PROCEDURE draw_window;
VAR
    width, height, x: INTEGER;


    PROCEDURE drawToolbarBtn (id, x: INTEGER);
    BEGIN
        K.DrawRect(x, btnTop, toolBtnSize, toolBtnSize, K.toolbarColor);
        K.DrawLine(x, btnTop + toolBtnSize, x + toolBtnSize, btnTop + toolBtnSize, K.shadowColor);
        K.DrawLine(x + toolBtnSize, btnTop, x + toolBtnSize, btnTop + toolBtnSize, K.shadowColor);
        K.CreateButton(id + ORD({30}), x, btnTop, toolBtnSize, toolBtnSize, K.btnColor, "");
    END drawToolbarBtn;


BEGIN
    K.BeginDraw;
    K.CreateWindow(30 + K.GetTickCount() MOD 128, 30 + K.GetTickCount() MOD 128, winWidth, winHeight, K.winColor, 73H, 0, 0, "");
    IF (text # NIL) & ~K.RolledUp() THEN
    	IF confirm THEN
    		resetTimer
    	END;
        confirm := FALSE;
        K.ClientSize(width, height);

        K.DrawRect(0, 0, width, TOP, K.winColor);
        K.DrawRect(0, 0, LEFT, height, K.winColor);
        K.DrawRect(LEFT + canvas.width + 1, TOP + canvas.height, scrollWidth - 1, scrollWidth, K.winColor);
        Menu.DrawMain(mainMenu);

        x := searchLeft;

        drawToolbarBtn(btnNew, x);
        drawIcon(icons, 2, x);
        INC(x, toolBtnSize + 5);

        drawToolbarBtn(btnOpen, x);
        drawIcon(icons, 0, x);
        INC(x, toolBtnSize + 5);

        drawToolbarBtn(btnSave, x);
        INC(x, toolBtnSize + 5 + toolbarDelim);

        drawToolbarBtn(btnSearch, x);
        drawIcon(icons, 49, x);
        INC(x, toolBtnSize + 5 + toolbarDelim);

        drawToolbarBtn(btnUndo, x);
        INC(x, toolBtnSize + 5);

        drawToolbarBtn(btnRedo, x);
        INC(x, toolBtnSize + 5 + toolbarDelim);

        drawToolbarBtn(btnUpper, x);
        INC(x, toolBtnSize + 5);

        drawToolbarBtn(btnLower, x);
        INC(x, toolBtnSize + 5 + toolbarDelim);

        drawToolbarBtn(btnBuild, x);
        INC(x, toolBtnSize + 5);

        drawToolbarBtn(btnRun, x);
        INC(x, toolBtnSize + 5);

        toolbarIcons;

        DrawState(text, width, height);
        IF search & searchOpened THEN
            SearchPanel(searchLeft, TOP)
        END;
        Tabs.draw(tabs);
        repaint
    END;
    K.EndDraw
END draw_window;


PROCEDURE mouse (VAR x, y: INTEGER);
VAR
    msState: SET;
BEGIN
	K.mouse(msState, x, y);
	DEC(x, LEFT);
	DEC(y, TOP)
END mouse;


PROCEDURE stopTimer;
BEGIN
	T.hideCursor;
    Timer.kill;
    repaint
END stopTimer;


PROCEDURE OpenFile (VAR FileName: RW.tFileName; filter: ARRAY OF CHAR);
BEGIN
    stopTimer;
    OpenDlg.SetFilter(OD, filter);
    OpenDlg.Show(OD, 500, 400);
    WHILE OD.status = 2 DO
        K.Pause(30)
    END;
    IF OD.status = 1 THEN
        COPY(OD.FilePath, FileName)
    ELSE
        FileName := ""
    END;
    resetTimer
END OpenFile;


PROCEDURE error (s: RW.tFileName);
BEGIN
    K.Run("/rd/1/@notify", s)
END error;


PROCEDURE saveError (name: RW.tFileName);
VAR
    s: RW.tFileName;
BEGIN
    s := "'cedit: error saving file ";
    U.append8(s, name);
    U.append8(s, "' -E");
    error(s)
END saveError;


PROCEDURE saveAs (text: T.tText);
VAR
    fileName, name: RW.tFileName;
    ext: ARRAY 8 OF CHAR;
BEGIN
    OD._type := OpenDlg.tsave;
    U.getFileName(text.fileName, OD.FileName, U.SLASH);
    IF OD.FileName = "" THEN
        OD.FileName := "NewFile.";
        Languages.getExt(text.lang, ext);
        U.append8(OD.FileName, ext)
    END;
    OpenFile(fileName, EditFilter);
    IF fileName # "" THEN
        IF T.save(text, fileName) THEN
            T.setName(text, fileName);
            U.getFileName(fileName, name, U.SLASH);
            Tabs.rename(tabs, curText, name)
        ELSE
            saveError(fileName)
        END
    END
END saveAs;


PROCEDURE getIdx (text: T.tText): INTEGER;
VAR
    i: INTEGER;
BEGIN
    i := 0;
    WHILE texts[i] # text DO
        INC(i)
    END
    RETURN i
END getIdx;


PROCEDURE Switch (txt: T.tText);
BEGIN
    Tabs.switch(tabs, curText);
    text := txt;
    T.switch(txt);
    switch := TRUE
END Switch;


PROCEDURE save (text: T.tText);
BEGIN
    IF text.modified THEN
        IF text.fileName # "" THEN
            IF ~T.save(text, text.fileName) THEN
                saveError(text.fileName)
            END
        ELSE
            curText := getIdx(text);
            Switch(text);
            saveAs(text)
        END
    END
END save;


PROCEDURE saveAll;
VAR
    i: INTEGER;
BEGIN
    i := textsCount - 1;
    WHILE i >= 0 DO
        IF texts[i].modified THEN
            save(texts[i])
        END;
        DEC(i)
    END;
END saveAll;


PROCEDURE insert (pos: INTEGER; txt: T.tText);
VAR
    i: INTEGER;
    name: RW.tFileName;
BEGIN
    FOR i := textsCount - 1 TO pos BY -1 DO
        texts[i + 1] := texts[i]
    END;
    texts[pos] := txt;
    INC(textsCount);
    curText := pos;
    IF txt.fileName = "" THEN
        name := "new"
    ELSE
        U.getFileName(txt.fileName, name, U.SLASH)
    END;
    Tabs.add(tabs, name);
    Switch(txt)
END insert;


PROCEDURE Confirm;
CONST
    width  = btnWidth*2 + 30;
    height = btnHeight*2 + 20;
    lineColor = 808080H;
VAR
    left, top, right, bottom: INTEGER;
BEGIN
	stopTimer;
    draw_window;
    confirm := TRUE;
    left := (canvas.width - width) DIV 2 + LEFT;
    top := (canvas.height - height) DIV 2 + TOP;
    right := left + width - 1;
    bottom := top + height - 1;
    K.DrawRect(left, top, width, height, K.winColor);
    Rect(left, top, right, bottom, lineColor);
    K.DrawText866(left + (width - 10*fontWidth) DIV 2, top + 10, K.textColor, "save file?");
    K.CreateButton(btnYes, left + 10, top + 35, btnWidth, btnHeight, K.btnColor, "yes");
    K.CreateButton(btnNo, left + 20 + btnWidth, top + 35, btnWidth, btnHeight, K.btnColor, "no");
END Confirm;


PROCEDURE closeFile (conf: BOOLEAN; n: INTEGER);
VAR
    i: INTEGER;
BEGIN
    IF texts[n].modified & conf THEN
        Confirm
    ELSE
        Tabs.delete(tabs, n);
        FOR i := n + 1 TO textsCount - 1 DO
            texts[i - 1] := texts[i]
        END;
        DEC(textsCount);
        IF (curText = textsCount) OR (n < curText) THEN
            DEC(curText)
        END;
        IF curText >= 0 THEN
            Switch(texts[curText])
        ELSE
            K.Exit
        END;
        draw_window
    END
END closeFile;


PROCEDURE NewFile;
VAR
    nov: T.tText;
BEGIN
    IF textsCount < maxTexts THEN
        nov := T.New();
        T.SetPos(nov, 0, 0);
        insert(textsCount, nov)
    ELSE
        error("'cedit: too many files' -E")
    END
END NewFile;


PROCEDURE getFileNum (fileName: RW.tFileName): INTEGER;
VAR
    i: INTEGER;

    PROCEDURE nameEq (name1, name2: RW.tFileName): BOOLEAN;
    VAR
        n1, n2: RW.tFileName;
    BEGIN
        n1 := name1;
        n2 := name2;
        U.upcase(n1);
        U.upcase(n2)
        RETURN n1 = n2
    END nameEq;

BEGIN
    i := 0;
    WHILE (i < textsCount) & ~nameEq(texts[i].fileName, fileName) DO
        INC(i)
    END;
    IF i = textsCount THEN
        i := -1
    END
    RETURN i
END getFileNum;


PROCEDURE SwitchTab (n: INTEGER);
BEGIN
    curText := n;
    Tabs.switch(tabs, n);
    Switch(texts[n]);
    resetTimer;
    draw_window
END SwitchTab;


PROCEDURE open;
VAR
    fileName: RW.tFileName;
    nov: T.tText;
    err, n: INTEGER;
BEGIN
    IF textsCount < maxTexts THEN
        OD._type := OpenDlg.topen;
        OpenFile(fileName, EditFilter);
        IF fileName # "" THEN
            n := getFileNum(fileName);
            IF n = -1 THEN
                nov := T.open(fileName, err);
                IF nov = NIL THEN
                    error("'cedit: error opening file' -E")
                ELSE
                    insert(textsCount, nov);
                    T.SetPos(nov, 0, 0)
                END
            ELSE
                SwitchTab(n)
            END
        END
    ELSE
        error("'cedit: too many files' -E")
    END
END open;


PROCEDURE createSearchForm;
BEGIN
	EB.create(searchLeft, TOP + 20, EditBox_Width, EDITBOX_MAXCHARS, FindEdit);
	EB.create(searchLeft, TOP + 20 + 55, EditBox_Width, EDITBOX_MAXCHARS, ReplaceEdit);
    EB.create(searchLeft, TOP + 20 + 330, EditBox_Width, EDITBOX_MAXCHARS, GotoEdit);
    INCL(GotoEdit.flags, 15);
    CheckBox.create("backward", BKW);
    CheckBox.create("match case", CS);
    CheckBox.create("whole word", WH);
END createSearchForm;


PROCEDURE EditBox_GetValue (edit: EB.tEditBox; VAR s: ARRAY OF WCHAR);
VAR
    str: ARRAY EDITBOX_MAXCHARS + 1 OF CHAR;
    i: INTEGER;
BEGIN
    EB.getValue(edit, str);
    i := 0;
    WHILE str[i] # 0X DO
        s[i] := WCHR(E.cp866[ORD(str[i])]);
        INC(i)
    END;
    s[i] := 0X
END EditBox_GetValue;


PROCEDURE Search;
BEGIN
    search := ~search;
    LEFT := searchLeft;
    IF search THEN
        searchOpened := TRUE;
        INC(LEFT, EditBox_Width + SEARCH_PADDING*2 + 5);
        IF T.search(text, searchText, cs, whole) THEN END
    ELSE
        IF T.search(text, "", FALSE, FALSE) THEN END
    END;
    SetFocus(FindEdit, search);
    resize;
    draw_window
END Search;


PROCEDURE click (x, y: INTEGER): INTEGER;
VAR
    scrollX, scrollY: INTEGER;
    shift, ctrl: BOOLEAN;
BEGIN
    K.getKBState(shift, ctrl);
    T.getScroll(text, scrollX, scrollY);
    T.scroll(text, hScroll.value - scrollX, vScroll.value - scrollY);
    IF U.between(0, x, canvas.width - 1) & U.between(0, y, canvas.height - 1) THEN
        leftButton := TRUE;
        SetFocus(FindEdit, FALSE);
        IF ~shift THEN
            T.resetSelect(text)
        END;
        T.mouse(text, x, y)
    END;
    repaint
    RETURN K.GetTickCount()
END click;


PROCEDURE Close;
VAR
    cont: BOOLEAN;
BEGIN
    closing := TRUE;
    cont := TRUE;
    WHILE (textsCount > 0) & cont DO
        IF text.modified THEN
            Confirm;
            cont := FALSE
        ELSE
            closeFile(FALSE, curText);
            repaint
        END
    END
END Close;


PROCEDURE CloseMenu;
BEGIN
    Menu.close(subEOL);
    Menu.close(subCurLine);
    Menu.close(subIndent);
    Menu.close(subCase);
    Menu.close(subBookmark);
    Menu.close(menuFile);
    Menu.close(menuEdit);
    Menu.close(menuSearch);
    Menu.close(menuEncoding);
    Menu.close(menuView);
    Menu.close(menuLanguage);
    Menu.close(menuProgram);
    Menu.close(menuTools);
    Menu.close(context)
END CloseMenu;


PROCEDURE MenuItemClick (menu: Menu.tMenu; id: INTEGER);
VAR
	msg: ARRAY 2 OF INTEGER;
BEGIN
	msg[0] := id;
	msg[1] := 8;
    K.SendIPC(mainTID, msg)
END MenuItemClick;


PROCEDURE goto;
VAR
    gotoVal: INTEGER;
BEGIN
    EditBox_GetValue(GotoEdit, gotoText);
    IF U.str2int(gotoText, gotoVal) & T.goto(text, gotoVal) THEN
    	SetFocus(GotoEdit, FALSE)
    END
END goto;


PROCEDURE Script (script: ARRAY OF CHAR);
BEGIN
    IF script # "" THEN
        K.Run("/rd/1/@open", script)
    END
END Script;


PROCEDURE ShowSearchPanel (goto: BOOLEAN);
VAR
	i: INTEGER;
	flag: BOOLEAN;
BEGIN
	flag := FALSE;
	IF T.selected(text) & ~goto THEN
		T.getSelectedText(text, new_searchText);
		IF new_searchText # "" THEN
			i := 0;
			WHILE (new_searchText[i] # 0X) & (new_searchText[i] # Lines.TAB) DO
				INC(i)
			END;
			IF new_searchText[i] = 0X THEN
				searchText := new_searchText;
				EB.setValue(FindEdit, searchText);
				notFound := ~T.search(text, searchText, cs, whole);
				flag := TRUE
			END
		END
	END;
    IF ~search THEN
        Search
    ELSIF ~searchOpened THEN
        search := FALSE;
        Search
    END;
    IF flag THEN
    	SetFocus(FindEdit, FALSE)
    ELSIF goto THEN
   		SetFocus(GotoEdit, TRUE)
    ELSE
    	SetFocus(FindEdit, TRUE)
    END
END ShowSearchPanel;


PROCEDURE CanvasToScreen (VAR x, y: INTEGER);
VAR
    cliX, cliY,
    winX, winY: INTEGER;
BEGIN
    K.WinPos(winX, winY);
    K.ClientPos(cliX, cliY);
    x := x + winX + cliX + LEFT;
    y := y + winY + cliY + TOP;
END CanvasToScreen;


PROCEDURE ShowMenu (menu: Menu.tMenu);
VAR
    winX, winY, cliX, cliY, x, y, i: INTEGER;
    selected, enabled: BOOLEAN;
BEGIN
    IF menu = context THEN
        mouse(x, y);
        IF ~(U.between(0, x, canvas.width - 1) & U.between(0, y, canvas.height - 1)) THEN
            menu := NIL
        END
    ELSE
        K.WinPos(winX, winY);
        K.ClientPos(cliX, cliY);
        x := winX + cliX;
        y := Menu.MainMenuHeight + winY + cliY
    END;
    selected := T.selected(text);

    IF menu = menuFile THEN
        Menu.setEnabled(menu, menuSave, text.modified);
        Menu.setEnabled(menu, menuFolder, text.fileName # "");
        i := 0;
        WHILE (i < textsCount) & ~texts[i].modified DO
            INC(i)
        END;
        Menu.setEnabled(menu, menuSaveAll, i < textsCount);
        INC(x, menuFileX)
    ELSIF (menu = menuEdit) OR (menu = context) THEN
        Menu.setEnabled(menu, menuUndo, ~ChangeLog.isFirstGuard(text.edition));
        Menu.setEnabled(menu, menuRedo, ~ChangeLog.isLastGuard(text.edition));
        Menu.setEnabled(menu, menuCut, selected);
        Menu.setEnabled(menu, menuCopy, selected);
        Menu.setEnabled(menu, menuDelete, selected);
        Menu.setEnabled(menu, menuPaste, CB.available());
        IF menu = menuEdit THEN
            INC(x, menuEditX)
        ELSE
            IF y + menu.height >= canvas.height THEN
                DEC(y, menu.height)
            END;
            IF x + menu.width >= canvas.width THEN
                DEC(x, menu.width)
            END;
            CanvasToScreen(x, y)
        END
    ELSIF menu = menuEncoding THEN
        Menu.option(menu, menuUTF8BOM, T.getEnc(text) = E.UTF8BOM);
        Menu.option(menu, menuUTF8,    T.getEnc(text) = E.UTF8);
        Menu.option(menu, menuCP866,   T.getEnc(text) = E.CP866);
        Menu.option(menu, menuWin1251, T.getEnc(text) = E.W1251);
        INC(x, menuEncodingX)
    ELSIF menu = menuView THEN
        Menu.check(menu, menuNumbers,  text.numbers);
        Menu.check(menu, menuFontSize, font = font2);
        FOR i := 0 TO Ini.sections.count - 1 DO
            Menu.option(menu, menuColors + i, Ini.curSectionNum = i)
        END;
        INC(x, menuViewX)
    ELSIF menu = menuLanguage THEN
        Menu.option(menu, menuText,   text.lang = Languages.langText);
        Menu.option(menu, menuC,      text.lang = Languages.langC);
        Menu.option(menu, menuFasm,   text.lang = Languages.langFasm);
        Menu.option(menu, menuIni,    text.lang = Languages.langIni);
        Menu.option(menu, menuJSON,   text.lang = Languages.langJSON);
        Menu.option(menu, menuLua,    text.lang = Languages.langLua);
        Menu.option(menu, menuOberon, text.lang = Languages.langOberon);
        Menu.option(menu, menuPascal, text.lang = Languages.langPascal);
        INC(x, menuLanguageX)
    ELSIF menu = menuProgram THEN
        Menu.setEnabled(menu, menuBuild, buildScript # "");
        Menu.setEnabled(menu, menuDebug, debugScript # "");
        Menu.setEnabled(menu, menuRun, runScript # "");
        INC(x, menuProgramX)
    ELSIF menu = menuTools THEN
        INC(x, menuToolsX)
    ELSIF menu = menuSearch THEN
        INC(x, menuSearchX)
    END;

    enabled := search & (searchText # "");
    Menu.setEnabled(menuSearch, menuFindNext, enabled);
    Menu.setEnabled(menuSearch, menuFindPrev, enabled);

    Menu.setEnabled(subIndent, menuIncInd, selected);
    Menu.setEnabled(subIndent, menuDecInd, selected);

    Menu.setEnabled(subCase, menuUpper, selected);
    Menu.setEnabled(subCase, menuLower, selected);

	Menu.option(subEOL, menuCRLF, T.getEol(text) = RW.EOL_CRLF);
	Menu.option(subEOL, menuLF,   T.getEol(text) = RW.EOL_LF);
	Menu.option(subEOL, menuCR,   T.getEol(text) = RW.EOL_CR);

    IF menu # NIL THEN
    	Timer.kill;
        IF Menu.opened(menu) THEN
            Menu.close(menu)
        END;
        Menu.open(menu, x, y);
        menuActive := TRUE
    END
END ShowMenu;


PROCEDURE setScript (VAR script: RW.tFileName);
VAR
	temp: RW.tFileName;
BEGIN
	OpenFile(temp, ShellFilter);
	IF temp # "" THEN
		script := temp
	END
END setScript;


PROCEDURE receiveIPC;
VAR
	scrollIPC: BOOLEAN;
	item: List.tItem;
BEGIN
	scrollIPC := FALSE;
    IF IPC[0] = Timer.ID THEN
    	IF IPC[4] = Timer.n THEN
			T.toggleCursor;
			repaint
		END;
    	IPC[2] := 0
    ELSIF IPC[0] = mainTID THEN
    	IF IPC[2] = Scroll.ScrollIPC THEN
    		Scroll.receiveIPC(IPC, scrollIPC)
    	END;
    	IF ~scrollIPC THEN
    		IPC[2] := 0
    	END
    ELSE
    	IF ~Menu.isSender(IPC[0]) THEN
   			IPC[2] := 0
    	ELSE
    		IF IPC[2] < 0 THEN
    			item := List.getItem(mainMenu, (-IPC[2] - mainMenuBtn) MOD mainMenu.count);
    			IF item # NIL THEN
    				ShowMenu(item(Menu.tMainItem).menu)
    			END;
    			IPC[2] := 0
    		END
    	END
    END;
    IF ~scrollIPC THEN
	    CASE IPC[2] OF
	    |0:
	    |menuCut:       T.key(text, ORD("X"), FALSE, TRUE)
	    |menuCopy:      T.key(text, ORD("C"), FALSE, TRUE)
	    |menuPaste:     T.key(text, ORD("V"), FALSE, TRUE)
	    |menuDelete:    T.key(text,       46, FALSE, FALSE)
	    |menuSelectAll: T.key(text, ORD("A"), FALSE, TRUE)

	    |menuNew:
	        NewFile
	    |menuOpen:
	        open
	    |menuSave:
	        save(text);
	        repaint
	    |menuSaveAs:
	        saveAs(text);
	        repaint
	    |menuSaveAll:
	        saveAll;
	        repaint
	    |menuClose:
	        closeFile(TRUE, curText)
	    |menuFolder:
	        K.Run("/rd/1/File Managers/Eolite", text.fileName)
	    |menuExit:
	        Close
	    |menuUndo:
	        T.undo(text);
	        repaint
	    |menuRedo:
	        T.redo(text);
	        repaint
	    |menuFind:
	        ShowSearchPanel(FALSE)
	    |menuFindNext:
	        notFound := ~T.findNext(text, BKW.value);
	        menuFindClicked := TRUE
	    |menuFindPrev:
	        notFound := ~T.findNext(text, ~BKW.value);
	        menuFindClicked := TRUE
	    |menuGoto:
	        ShowSearchPanel(TRUE)
	    |menuToggleBookmark:
	    	T.toggleLabel(text)
	    |menuNextBookmark:
	    	T.gotoLabel(text, TRUE)
	    |menuPrevBookmark:
	    	T.gotoLabel(text, FALSE)
	    |menuNumbers:
	        T.toggleNumbers(text)
	    |menuFontSize:
	        IF font = font1 THEN
	            font := font2
	        ELSE
	            font := font1
	        END;
	        resize
	    |menuText:
	        T.setLang(text, Languages.langText)
	    |menuC:
	        T.setLang(text, Languages.langC)
	    |menuFasm:
	        T.setLang(text, Languages.langFasm)
	    |menuIni:
	        T.setLang(text, Languages.langIni)
	    |menuJSON:
	        T.setLang(text, Languages.langJSON)
	    |menuLua:
	        T.setLang(text, Languages.langLua)
	    |menuOberon:
	        T.setLang(text, Languages.langOberon)
	    |menuPascal:
	        T.setLang(text, Languages.langPascal)
	    |menuBuild:
	        Script(buildScript)
	    |menuBuildScript:
	    	setScript(buildScript)
	    |menuRun:
	        Script(runScript)
	    |menuRunScript:
	    	setScript(runScript)
	    |menuDebug:
	        Script(debugScript)
	    |menuDebugScript:
	    	setScript(debugScript)
	    |menuUTF8BOM:
	    	T.setEnc(text, E.UTF8BOM)
	    |menuUTF8:
	    	T.setEnc(text, E.UTF8)
	    |menuCP866:
	    	T.setEnc(text, E.CP866)
	    |menuWin1251:
	    	T.setEnc(text, E.W1251)
	    |menuLF:
	    	T.setEol(text, RW.EOL_LF)
	    |menuCRLF:
	    	T.setEol(text, RW.EOL_CRLF)
	    |menuCR:
	    	T.setEol(text, RW.EOL_CR)
	    |menuPipet:
	        K.Run("/rd/1/develop/pipet", "")
	    |menuBoard:
	        K.Run("/rd/1/develop/board", "")
	    |menuSysFunc:
	        K.Run("/rd/1/docpack", "f")
	    |menuColors..menuMaxColors:
	        Ini.selectSection(IPC[2] - menuColors)
	    |menuMoveUp:
	    	T.upLine(text)
	    |menuMoveDown:
	    	T.downLine(text)
	    |menuDuplicate:
	    	T.dupLine(text)
	    |menuRemove:
	    	T.delLine(text)
	    |menuIncInd:
	    	T.Indent(text, TRUE)
		|menuDecInd:
			T.Indent(text, FALSE)
		|menuUpper:
			T.chCase(text, TRUE)
		|menuLower:
			T.chCase(text, FALSE)
	    END;
    	IPC[0] := 0;
    	IPC[1] := 0
    END
END receiveIPC;


PROCEDURE MenuKeyDown (menu: Menu.tMenu; key: INTEGER): BOOLEAN;
VAR
    menuItem: INTEGER;
    shift, ctrl: BOOLEAN;
BEGIN
    menuItem := -1;
    K.getKBState(shift, ctrl);
    IF ctrl THEN
        CASE key DIV 65536 OF
        |17: menuItem := menuClose
        |21: menuItem := menuRedo
        |30: menuItem := menuSelectAll
        |32: menuItem := menuDuplicate
        |33,
         35: menuItem := menuFind
        |34: menuItem := menuGoto
        |44: menuItem := menuUndo
        |45: menuItem := menuCut
        |46: menuItem := menuCopy
        |47: menuItem := menuPaste
        |24: menuItem := menuOpen
        |31: menuItem := menuSave
        |49: menuItem := menuNew
        |67: menuItem := menuBuild
        |83: menuItem := menuRemove
        |22: menuItem := menuUpper
        |38: menuItem := menuLower
        |60: menuItem := menuToggleBookmark
        |72: menuItem := menuMoveUp
        |80: menuItem := menuMoveDown
        ELSE
        END
    ELSE
        IF key DIV 65536 = 83 THEN
            menuItem := menuDelete
        ELSIF key DIV 65536 = 67 THEN
            menuItem := menuRun
        ELSIF key DIV 65536 = 15 THEN
            menuItem := menuIncInd
        ELSIF (key DIV 65536 = 14) & shift THEN
            menuItem := menuDecInd
        ELSIF key DIV 65536 = 60 THEN
        	IF shift THEN
        		menuItem := menuPrevBookmark
        	ELSE
        		menuItem := menuNextBookmark
        	END
        END
    END;
    IF menuItem # -1 THEN
        IF Menu.isEnabled(menu, menuItem) THEN
            MenuItemClick(menu, menuItem)
        ELSE
            menuItem := -1
        END
    END
    RETURN menuItem # -1
END MenuKeyDown;


PROCEDURE CreateContextMenu (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuUndo,      "undo         ctrl-Z");
    Menu.AddMenuItem(menu, menuRedo,      "redo         ctrl-Y");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuCut,       "cut          ctrl-X");
    Menu.AddMenuItem(menu, menuCopy,      "copy         ctrl-C");
    Menu.AddMenuItem(menu, menuPaste,     "paste        ctrl-V");
    Menu.AddMenuItem(menu, menuDelete,    "delete");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuSelectAll, "select all   ctrl-A");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateContextMenu;


PROCEDURE CreateMenuFile (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuNew,     "new         ctrl-N");
    Menu.AddMenuItem(menu, menuOpen,    "open        ctrl-O");
    Menu.AddMenuItem(menu, menuSave,    "save        ctrl-S");
    Menu.AddMenuItem(menu, menuSaveAs,  "save as");
    Menu.AddMenuItem(menu, menuSaveAll, "save all");
    Menu.AddMenuItem(menu, menuFolder,  "folder");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuClose,   "close       ctrl-W");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuExit,    "exit");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuFile;


PROCEDURE CreateMenuEdit (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuUndo,      "undo            ctrl-Z");
    Menu.AddMenuItem(menu, menuRedo,      "redo            ctrl-Y");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuCut,       "cut             ctrl-X");
    Menu.AddMenuItem(menu, menuCopy,      "copy            ctrl-C");
    Menu.AddMenuItem(menu, menuPaste,     "paste           ctrl-V");
    Menu.AddMenuItem(menu, menuDelete,    "delete");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuSelectAll, "select all      ctrl-A");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuCurLine,   "current line");
    Menu.child(menu, subCurLine);
    Menu.AddMenuItem(menu, menuIndent,    "indent");
    Menu.child(menu, subIndent);
    Menu.AddMenuItem(menu, menuCase,      "case");
    Menu.child(menu, subCase);
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuEdit;


PROCEDURE CreateMenuSearch (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuFind,     "search           ctrl-F");
    Menu.AddMenuItem(menu, menuFindNext, "find next        F3");
    Menu.AddMenuItem(menu, menuFindPrev, "find previous    shift-F3");
    Menu.AddMenuItem(menu, menuGoto,     "go to line       ctrl-G");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuBookmark, "bookmark");
    Menu.child(menu, subBookmark);
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuSearch;


PROCEDURE CreateMenuEncoding (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuUTF8BOM, E.names[E.UTF8BOM]);
    Menu.AddMenuItem(menu, menuUTF8,    E.names[E.UTF8]);
    Menu.AddMenuItem(menu, menuCP866,   E.names[E.CP866]);
    Menu.AddMenuItem(menu, menuWin1251, E.names[E.W1251]);
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuEOL,     "EOL");
    Menu.child(menu, subEOL);
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuEncoding;


PROCEDURE CreateMenuEOL (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuCRLF, RW.eolNames[RW.EOL_CRLF]);
    Menu.AddMenuItem(menu, menuLF,   RW.eolNames[RW.EOL_LF]);
    Menu.AddMenuItem(menu, menuCR,   RW.eolNames[RW.EOL_CR]);
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuEOL;


PROCEDURE CreateMenuView (): Menu.tMenu;
VAR
    menu: List.tList;
    colors: Ini.tSection;
    idx: INTEGER;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuNumbers,  "line numbers");
    Menu.AddMenuItem(menu, menuFontSize, "x2");
    Menu.delimiter(menu);

    colors := Ini.sections.first(Ini.tSection);
    idx := menuColors;
    WHILE colors # NIL DO
        Menu.AddMenuItem(menu, idx, colors.name);
        INC(idx);
        colors := colors.next(Ini.tSection)
    END;

    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuView;


PROCEDURE CreateMenuLanguage (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuC,      "C");
    Menu.AddMenuItem(menu, menuFasm,   "Fasm");
    Menu.AddMenuItem(menu, menuIni,    "Ini");
    Menu.AddMenuItem(menu, menuJSON,   "JSON");
    Menu.AddMenuItem(menu, menuLua,    "Lua");
    Menu.AddMenuItem(menu, menuOberon, "Oberon");
    Menu.AddMenuItem(menu, menuPascal, "Pascal");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuText,   "Text");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuLanguage;


PROCEDURE CreateMenuProgram (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuBuild,       "build    ctrl-F9");
    Menu.AddMenuItem(menu, menuBuildScript, "script");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuRun,         "run           F9");
    Menu.AddMenuItem(menu, menuRunScript,   "script");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuDebug,       "debug");
    Menu.AddMenuItem(menu, menuDebugScript, "script");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuProgram;


PROCEDURE CreateMenuTools (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuPipet,   "pipet");
    Menu.AddMenuItem(menu, menuBoard,   "board");
    Menu.AddMenuItem(menu, menuSysFunc, "system functions");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuTools;


PROCEDURE CreateMenuCurLine(): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuMoveUp,    "move up     ctrl-Up");
    Menu.AddMenuItem(menu, menuMoveDown,  "move down   ctrl-Down");
    Menu.AddMenuItem(menu, menuDuplicate, "duplicate   ctrl-D");
    Menu.AddMenuItem(menu, menuRemove,    "remove      ctrl-Del");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuCurLine;


PROCEDURE CreateMenuIndent(): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuIncInd, "increase    Tab");
    Menu.AddMenuItem(menu, menuDecInd, "decrease    shift-Bksp");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuIndent;


PROCEDURE CreateMenuCase(): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuUpper, "UPPER    ctrl-U");
    Menu.AddMenuItem(menu, menuLower, "lower    ctrl-L");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuCase;


PROCEDURE CreateMenuBookmark(): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuToggleBookmark, "toggle      ctrl-F2");
    Menu.AddMenuItem(menu, menuNextBookmark,   "next        F2");
    Menu.AddMenuItem(menu, menuPrevBookmark,   "previous    shift-F2");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuBookmark;


PROCEDURE HideSearch;
BEGIN
    SetFocus(FindEdit, FALSE);
    searchOpened := FALSE;
    LEFT := searchLeft;
    resize;
    draw_window
END HideSearch;


PROCEDURE KeyDown (key: INTEGER);
VAR
    keyCode: INTEGER;
    shift, ctrl: BOOLEAN;
BEGIN
	K.getKBState(shift, ctrl);
    keyCode := key DIV 65536;
    IF confirm THEN
        IF keyCode = 28 THEN (* Enter *)
            save(text);
            IF ~text.modified THEN
                closeFile(FALSE, curText)
            END
        END;
        key := -1
    ELSE
        IF keyCode = 61 THEN (* F3 *)
            key := -1;
            IF search & (searchText # "") THEN
                IF shift THEN
                    notFound := ~T.findNext(text, ~BKW.value)
                ELSE
                    notFound := ~T.findNext(text, BKW.value)
                END
            END
        ELSIF keyCode = 60 THEN (* F2 *)
            key := -1;
            IF ctrl THEN
                T.toggleLabel(text)
            ELSE
                T.gotoLabel(text, ~shift)
            END
        ELSIF keyCode = 67 THEN (* F9 *)
            key := -1;
            IF ctrl THEN
                Script(buildScript)
            ELSE
                Script(runScript)
            END
        ELSIF keyCode = 68 THEN (* F10 *)
        	IF shift THEN
        		ShowMenu(context)
        	ELSE
        		ShowMenu(menuFile)
        	END;
            key := -1
        ELSIF keyCode = 1 THEN (* Esc *)
            IF search THEN
            	IF shift THEN
            		HideSearch
            	ELSE
                	Search
                END
            END;
            key := -1
        ELSIF (keyCode = 55) & (key DIV 256 MOD 256 = 52) THEN (* PrtScn *)
            key := -1
        ELSIF (keyCode = 14) & shift THEN (* shift+Backspace *)
            key := -1;
            T.input(text, -8)
        ELSIF (keyCode = 15) & ctrl THEN (* ctrl+Tab *)
            key := -1;
            SwitchTab((curText + 1) MOD textsCount)
        ELSIF ((keyCode = 33) OR (keyCode = 35)) & ctrl THEN (* ctrl+F, ctrl+H*)
            key := -1;
            ShowSearchPanel(FALSE)
        ELSIF (keyCode = 34) & ctrl THEN (* ctrl+G *)
            key := -1;
            ShowSearchPanel(TRUE)
        ELSE
            IF EditBox_Focus(FindEdit) THEN
            	IF keyCode = 15 THEN (* Tab *)
            		SetFocus(ReplaceEdit, TRUE)
            	ELSE
	                EB.key(FindEdit, key);
	                EditBox_GetValue(FindEdit, new_searchText);
	                IF new_searchText # searchText THEN
	                    searchText := new_searchText;
	                    notFound := ~T.search(text, searchText, cs, whole)
	                END
                END
            ELSIF EditBox_Focus(ReplaceEdit) THEN
            	IF keyCode = 15 THEN (* Tab *)
            		SetFocus(GotoEdit, TRUE)
            	ELSE
                	EB.key(ReplaceEdit, key);
                	EditBox_GetValue(ReplaceEdit, replaceText)
                END
            ELSIF EditBox_Focus(GotoEdit) THEN
            	IF keyCode = 15 THEN (* Tab *)
            		SetFocus(FindEdit, TRUE)
            	ELSE
	                IF (key DIV 256) MOD 256 = 13 THEN
	                    goto
	                ELSE
	                    EB.key(GotoEdit, key)
	                END
                END
            ELSE
                CASE keyCode OF
                |73: key := 33
                |81: key := 34
                |71: key := 36
                |79: key := 35
                |72: key := 38
                |80: key := 40
                |75: key := 37
                |77: key := 39
                |82, 91, 219, 92, 220: key := -1 (* insert, windows *)
                |93: ShowMenu(context); key := -1
                |83: key := 46
                |59, 62..66, 87, 88: key := -1 (* F1, F4..F8, F11, F12 *)
                ELSE
                    IF ctrl THEN
                        CASE keyCode OF
                        |17: closeFile(TRUE, curText);
                             key := -2
                        |21: T.redo(text);
                             key := -1
                        |22: key := ORD("U")
                        |24: key := -1;
                             open
                        |30: key := ORD("A")
                        |31: key := -1;
                             save(text)
                        |32: key := ORD("D")
                        |38: key := ORD("L")
                        |44: T.undo(text);
                             key := -1
                        |45: key := ORD("X")
                        |46: key := ORD("C")
                        |47: key := ORD("V")
                        |49: key := -1;
                             NewFile
                        ELSE
                            key := -1
                        END
                    ELSE
                        T.input(text, E.cp866[key DIV 256 MOD 256]);
                        key := -1
                    END
                END;
                IF key >= 0 THEN
                    T.key(text, key, shift, ctrl)
                END
            END
        END
    END;
    IF key # -2 THEN
        repaint
    END
END KeyDown;


PROCEDURE BtnClick;
VAR
    btn: INTEGER;
    middle, exit: BOOLEAN;
    menu: Menu.tMenu;
BEGIN
    btn := K.ButtonCode(middle);
    IF U.between(Tabs.btnID, btn, Tabs.btnID + maxTexts - 1) THEN
        DEC(btn, Tabs.btnID);
        IF middle THEN
            IF texts[btn].modified THEN
                SwitchTab(btn)
            END;
            closeFile(TRUE, btn)
        ELSE
            SwitchTab(btn)
        END;
        btn := 0
    ELSE
        IF middle THEN
            btn := 0
        END
    END;
    IF btn # 0 THEN
    	menu := Menu.ClickMain(mainMenu, btn);
    	IF menu # NIL THEN
    		ShowMenu(menu);
    		btn := 0
    	END
    END;
    CASE btn OF
    |Tabs.btnID - 1: Tabs.scroll(tabs, -1); switch := TRUE; repaint
    |Tabs.btnID - 2: Tabs.scroll(tabs, +1); switch := TRUE; repaint

    |0:

    |btnNo:
        exit := closing;
        closeFile(FALSE, curText);
        repaint;
        IF exit THEN
            Close
        END
    |btnYes:
        exit := closing;
        save(text);
        IF ~text.modified THEN
            closeFile(FALSE, curText)
        END;
        repaint;
        IF exit THEN
            Close
        END
    |btnClose:
        Close
    |btnNew:
        NewFile;
        repaint
    |btnOpen:
        open
    |btnSave:
        save(text);
        repaint
    |btnSearch:
        ShowSearchPanel(FALSE);
        repaint
    |btnCloseSearch:
        Search
    |btnHideSearch:
        HideSearch
    |btnUndo:
        T.undo(text);
        repaint
    |btnRedo:
        T.redo(text);
        repaint
    |btnUpper:
        T.chCase(text, TRUE);
        repaint
    |btnLower:
        T.chCase(text, FALSE);
        repaint
    |btnBuild:
        Script(buildScript)
    |btnRun:
        Script(runScript)
    |btnFindNext:
        IF searchText # "" THEN
            notFound := ~T.findNext(text, BKW.value);
            repaint
        END
    |btnReplace:
        T.replace(text, replaceText, LENGTH(searchText));
        repaint
    |btnReplaceAll:
        notFound := ~T.search(text, searchText, cs, whole);
        IF ~notFound THEN
            replaced := T.replaceAll(text, replaceText, LENGTH(searchText));
        END;
        repaint
    |btnGoto:
        goto;
        repaint
    END
END BtnClick;


PROCEDURE MouseEvent (VAR resized: BOOLEAN; VAR firstClickX, firstClickY, time: INTEGER);
CONST
    DELAY = 10;
VAR
    msState: SET;
    scroll, x, y, scrollX, scrollY: INTEGER;
    pos1, pos2: T.tPoint;


    PROCEDURE EditBox (VAR eb: EB.tEditBox);
    VAR
        focus: BOOLEAN;
    BEGIN
        focus := EditBox_Focus(eb);
        EB.mouse(eb);
        IF focus # EditBox_Focus(eb) THEN
            SetFocus(eb, TRUE);
            repaint
        END
    END EditBox;


BEGIN
	CloseMenu;
    IF ~resized THEN
        msState := K.MouseState();
        IF ~(0 IN msState) OR (16 IN msState) THEN
        	leftButton := FALSE
        END;
        scroll := K.Scroll();
        IF scroll # 0 THEN
            T.scroll(text, 0, scroll*3);
            repaint
        END;
        IF leftButton THEN
            IF K.GetTickCount() - time >= DELAY THEN
            	T.getPos(text, pos1.Y, pos1.X);
                mouse(x, y);
                T.mouse(text, x, y);
                T.getPos(text, pos2.Y, pos2.X);
                IF (pos1.X # pos2.X) OR (pos1.Y # pos2.Y) THEN
                	repaint
                END
            END
        END;

		Scroll.mouse(hScroll);
		Scroll.mouse(vScroll);
        T.getScroll(text, scrollX, scrollY);
        IF (hScroll.value # scrollX) OR (vScroll.value # scrollY) THEN
			T.scroll(text, hScroll.value - scrollX, vScroll.value - scrollY);
        	repaint
        END;

        IF (8 IN msState) & ~(24 IN msState) THEN
            mouse(firstClickX, firstClickY);
            time := click(firstClickX, firstClickY)
        END;
        IF 9 IN msState THEN
            ShowMenu(context)
        END;
        IF 24 IN msState THEN
            mouse(x, y);
            IF U.between(-4, x - firstClickX, 4) & U.between(-4, y - firstClickY, 4) THEN
                IF U.between(0, x, canvas.width - 1) & U.between(0, y, canvas.height - 1) THEN
                    leftButton := FALSE;
                    T.selectWord(text);
                    repaint
                END
            ELSE
                firstClickX := x;
                firstClickY := y;
                time := click(firstClickX, firstClickY)
            END
        END
    END;
    IF search & searchOpened THEN
	    CheckBox.mouse(BKW);
    	CheckBox.mouse(CS);
    	CheckBox.mouse(WH);
        EditBox(FindEdit);
        EditBox(ReplaceEdit);
        EditBox(GotoEdit);
        IF (CS.value # cs) OR (WH.value # whole) THEN
            cs := CS.value;
            whole := WH.value;
            notFound := ~T.search(text, searchText, cs, whole);
            repaint
        END
    END;
    resized := FALSE
END MouseEvent;


PROCEDURE Redraw (VAR resized: BOOLEAN; VAR width, height, cliWidth, cliHeight: INTEGER);
VAR
    i: INTEGER;
BEGIN
    K.GetSystemColors;
    Icons.get(icons, grayIcons);
    FOR i := 0 TO 1 DO
        IF ~K.RolledUp() THEN
            K.ClientSize(width, height);
            IF (width # cliWidth) OR (height # cliHeight) THEN
                cliWidth := width;
                cliHeight := height;
                resize;
                resized := TRUE
            END;
            K.SetEventsMask({0, 1, 2, 5, 6, 31})
        ELSE
            K.SetEventsMask({0, 30, 31})
        END;
        draw_window
    END
END Redraw;


PROCEDURE ScrollChange;
BEGIN
	Scroll.change(hScroll);
	Scroll.change(vScroll);
	T.scroll(text, ORD(hScroll.Inc) - ORD(hScroll.Dec), ORD(vScroll.Inc) - ORD(vScroll.Dec));
	IF menuActive THEN
		draw_window;
		menuActive := FALSE
	ELSE
		repaint
	END
END ScrollChange;


PROCEDURE main;
VAR
    err: INTEGER;
    fileName, filePath: RW.tFileName;
    width, height, cliWidth, cliHeight: INTEGER;
    resized: BOOLEAN;
    firstClickX, firstClickY, time: INTEGER;
BEGIN
    K.GetSystemColors;
    Icons.get(icons, grayIcons);
    modified := FALSE;
    switch := FALSE;
    closing := FALSE;
    textsCount := 0;
    curText := 0;
    mainTID := K.ThreadID();
    K.SetIPC(IPC);
    U.ptr2str(K.GetName(), AppPath);
    Ini.load(AppPath);
    leftButton := FALSE;
    resized := FALSE;
    K.ScreenSize(winWidth, winHeight);
    winWidth := (winWidth*80) DIV 100 - (128 + 30);
    winHeight := winHeight - (128 + 30);
    winWidth := MAX(winWidth, minWinWidth);
    winHeight := MAX(winHeight, minWinHeight);
    cliWidth := winWidth;
    cliHeight := winHeight;
    LEFT := searchLeft;
    canvas := G.CreateCanvas(winWidth - (LEFT + RIGHT + 11), winHeight - (TOP + BOTTOM + 5) - K.SkinHeight());
    tabs := Tabs.create();
    Tabs.setArea(tabs, LEFT, TOP - Tabs.tabHeight, canvas.width, Tabs.tabHeight);
    font1 := G.CreateFont(1, "", {});
    font2 := G.CreateFont(2, "", {});
    font := font1;
    G.SetFont(canvas, font);
    T.init(resetTimer);
    T.setCanvas(canvas);
    U.ptr2str(K.GetCommandLine(), fileName);

    context := CreateContextMenu();
    menuFile := CreateMenuFile();
    subCurLine := CreateMenuCurLine();
    subIndent := CreateMenuIndent();
    subCase := CreateMenuCase();
    menuEdit := CreateMenuEdit();
    subCurLine.parent := menuEdit;
    subIndent.parent := menuEdit;
    subCase.parent := menuEdit;
    subBookmark := CreateMenuBookmark();
    menuSearch := CreateMenuSearch();
    subBookmark.parent := menuSearch;
    subEOL := CreateMenuEOL();
    menuEncoding := CreateMenuEncoding();
    subEOL.parent := menuEncoding;
    menuView := CreateMenuView();
    menuLanguage := CreateMenuLanguage();
    menuProgram := CreateMenuProgram();
    menuTools := CreateMenuTools();

    mainMenu := Menu.CreateMain(mainMenuBtn);
    Menu.AddMainItem(mainMenu, "file", menuFile);
    Menu.AddMainItem(mainMenu, "edit", menuEdit);
    Menu.AddMainItem(mainMenu, "search", menuSearch);
    Menu.AddMainItem(mainMenu, "encoding", menuEncoding);
    Menu.AddMainItem(mainMenu, "view", menuView);
    Menu.AddMainItem(mainMenu, "language", menuLanguage);
    Menu.AddMainItem(mainMenu, "program", menuProgram);
    Menu.AddMainItem(mainMenu, "tools", menuTools);

    Ini.getSettings(buildScript, runScript, debugScript);
    IF fileName = "" THEN
        text := T.New();
        filePath := "/rd/1"
    ELSE
        text := T.open(fileName, err);
        IF text = NIL THEN
            error("'cedit: error opening file' -E");
            K.Exit
        ELSE
            U.getPath(fileName, filePath)
        END
    END;
    OD := OpenDlg.Create(draw_window, OpenDlg.topen, filePath, "");
    insert(0, text);
    Scroll.init(ScrollChange);
    Scroll.create(FALSE, canvas.width + 1, scrollWidth, scrollWidth, scrollWidth*3 DIV 2, hScroll);
    Scroll.create(TRUE, scrollWidth, canvas.height + 1, scrollWidth, scrollWidth*3 DIV 2, vScroll);
    T.resize(canvas.width, canvas.height);
    T.SetPos(text, 0, 0);
    confirm := FALSE;
    notFound := FALSE;
    menuFindClicked := FALSE;
    menuActive := FALSE;
    search := FALSE;
    searchOpened := FALSE;
    createSearchForm;
    new_searchText := "";
    searchText := "";
    cs := FALSE;
    whole := FALSE;
    replaced := 0;
    K.SetEventsMask({0, 1, 2, 5, 6, 31});
    Menu.init(resetTimer);
    draw_window;
    Timer.create(mainTID);
    WHILE TRUE DO
        CASE K.WaitForEvent() OF
        |1:	Redraw(resized, width, height, cliWidth, cliHeight)
        |2: KeyDown(K.GetKey())
        |3: BtnClick
        |6: MouseEvent(resized, firstClickX, firstClickY, time)
        |7: receiveIPC
        END
    END
END main;


BEGIN
    main
END CEdit.